My first conviction as soon as I found myself outside the house, was that no alternative was left me but
to act at once on the information I had received -- to make sure of the Count that night, or to risk the
loss, if I only delayed till the morning, of Laura's last chance. I looked at my watch -- it was ten o'clock.

Not the shadow of a doubt crossed my mind of the purpose for which the Count had left the theatre. His
escape from us, that evening, was beyond all question the preliminary only to his escape from London.
The mark of the Brotherhood was on his arm -- I felt as certain of it as if he had shown me the brand; and
the betrayal of the Brotherhood was on his conscience -- I had seen it in his recognition of Pesca.

It was easy to understand why that recognition had not been mutual. A man of the Count's character
would never risk the terrible consequences of turning spy without looking to his personal security quite
as carefully as he looked to his golden reward. The shaven face, which I had pointed out at the Opera,
might have been covered by a beard in Pesca's time -- his dark brown hair might be a wig -- his name
was evidently a false one. The accident of time might have helped him as well -- his immense corpulence
might have come with his later years. There was every reason why Pesca should not have known him
again -- every reason also why he should have known Pesca, whose singular personal appearance made
a marked man of him, go where he might.

I have said that I felt certain of the purpose in the Count's mind when he escaped us at the theatre.
How could I doubt it, when I saw, with my own eyes, that he believed himself, in spite of the change
in his appearance, to have been recognised by Pesca, and to be therefore in danger of his life? If I
could get speech of him that night, if I could show him that I, too, knew of the mortal peril in which he
stood, what result would follow? Plainly this. One of us must be master of the situation -- one of us
must inevitably be at the mercy of the other.

I owed it to myself to consider the chances against me before I confronted them. I owed it to my wife to
do all that lay in my power to lessen the risk.

The chances against me wanted no reckoning up -- they were all merged in one- If the Count discovered,
by my own avowal, that the direct way to his safety lay through my life, he was probably the last man
in existence who would shrink from throwing me off my guard and taking that way, when he had me
alone within his reach. The only means of defence against him on which I could at all rely to lessen the
risk, presented themselves, after a little careful thinking, clearly enough. Before I made any personal
acknowledgment of my discovery in his presence, I must place the discovery itself where it would be
ready for instant use against him, and safe from any attempt at suppression on his part. If I laid the
mine under his feet before I approached him, and if I left instructions with a third person to fire it on the
expiration of a certain time, unless directions to the contrary were previously received under my own
hand, or from my own lips -- in that event the Count's security was absolutely dependent upon mine,
and I might hold the vantage ground over him securely, even in his own house.

This idea occurred to me when I was close to the new lodgings which we had taken on returning from
the sea-side. I went in without disturbing any one, by the help of my key. A light was in the hall, and I
stole up with it to my workroom to make my preparations, and absolutely to commit myself to an interview
with the Count, before either Laura or Marian could have the slightest suspicion of what I intended to do.

A letter addressed to Pesca represented the surest measure of precaution which it was now possible for
me to take. I wrote as follows --

`The man whom I pointed out to you at the Opera is a member of the Brotherhood, and has been false
to his Lust put both these assertions to the test instantly. You know the name he goes by in England.
His address is No. 5 Forest Road, St John's Wood. On the love you once bore me, use the power entrusted
to you without mercy and without delay against that man. I have risked all and lost all -- and the forfeit
of my failure has been paid with my life.'